Buttercream Streusel Or Buttercream Filled Coffee Cake

I have been searching "high and low" for a recipe for a coffee cake that I grew up eating on Sunday mornings as a little girl from a local bakery (in my town at that time). The bakery was known as Lindstrom's, but closed down years ago. Their Buttercream Streusel was heaven on earth as was all of their coffee cakes. Might anyone have a recipe for something like this? Thanks!!!!